Hay-elevator jack



(No Model.) 2 SheetsSheet 1.

11.3. WITMER. HAY ELEVATOR JACK.

Patented May 5, 18 96.

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2 Sheets-Sheet 2 (No Model.) v

H. E. WITMER. HAY ELEVATOR JACK.

ANDRE EGRAKAMPHUTO UMQWASHINGYOILDI UNITED STATES PATENT @rrrcn.

HENRY E. W'ITMER, OF MARIETTA, PENNSYLVANIA.

HAY- ELEVATO R JAC K.

SPECIFICATION forming part of Letters Patent No. 559,653, dated May 5,1896.

Application filed November '7, 1890. Serial No. 370,635. (No model.)

To all zuhmn it may concern.-

Be it known that I, HENRY E. ITMER, of Marietta, in the county ofLancaster and State of Pennsylvania, have invented certain new anduseful Improvements in Jacks; and I do hereby declare the following tobe a full,clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to improvements in a jack to be used in connectionwith a rope having one end attached to a carrier running on an elevatedtrack, adapted to hold aloaded hook suspended and convey it to thedropping-point, and to return again to the loading-point for anotherload, and ahorse hitched to the other end of the rope, and the jack isof that class in which a pulley is pivoted to turn perpendicularly tothe upper face of a tilting arm or lever, which in turn is pivoted orfulcrumcd to a standard or jaw affixed to the upper end of a post orbase firmly planted in the ground where the jack is to be used.

The object of my invention is to provide means so that when the horse isdone pulling, having drawn a loaded hook up and to the dropping-point,the horse will be at the starting-point, with a saving of at least halfthe distance he formerly traveled over, as well as the wear and tear tothe rope from dragging it over the ground.

The purposes of my invention are attained by the mechanism and devicesillustrated in the accompanying drawings, similar letters and numeralsreferring to similar parts throughout the several views, in which-Figure 1 is a perspective view showing a carrier in place, in connectionwith which the elements of my invention are used, said elementsappearing in position on the slope; Fig. 2, a partial vertical sectionof a slope or en1- bankinent leading to a barn-floor, showing theelements of my invention, in side elevation and in full lines, in place,and dotted lines indicating the position of the lever at the moment ofreleasing the rope; Fig. 3, a top view of Fig. 2, showing thehoisting-rope continued to the starting-point; Fig. 4, an enlarged frontelevation of the supportingpost; Fig. 5, a similar view of thefulcrumjaw, showing the fulcrum-pin in full and dotted lines in place;Fig. 6, an enlarged top view of the lever, showing the pulley, thebrace, and the pivot-pin in place; Fig. 7 an enlarged View of Fig. 6,viewed from the left; Fig. 8, a front view, enlarged, of the. groovedpulley, link, and staple detached from the plank in Fig. 2; Figs. 9 and10, views from the right, respectively, of Figs. 4 and 5; and Fig. 11, aview from below of Fig. 6.

In the drawings, A represents an embankment or slope constituting thedriveway leading from a lower level to the floor above the stables, onwhich are situated the storage niows in what is known as the Swiss orbank barn; B, a plank constituting the edge or beginning of thebarn-floor; G, a grooved pulley pivoted between the arms of a clevis c,securely affixed to the barn-floor by a staple c; D, a post set securelyin the ground and having at its upper end a tenon d, adapted to have thelever-fulcrum block attached thereto; E, the lever-fulcrum block, beinga rectangular body having at its upper end a jaw 6, adapted to havepivoted therein the tilting lever, and situated transversely in itslower end is a U-shaped socket or recess adapted to receive the tenon dand to be bolted thereto by bolts e, the upper end of the jaw beingprovided with a pivot-pin 6 F, the tilting lever, being a rectangularbeam having toward one end and along the center line of its wider sidesa series of holesfthrough its body, through which the pivot-pin e passesto fulcrum the lever F to the jaw e, and whereby the lever-fulcruin maybe changed as the case may require; F, a grooved pulley placedperpendicularly on the upper face of the lever and pivoted thereto by abolt j", which in turn is braced by the curved strap f, being bolted tothe lever near the rear or shorter end from the fulcrum; G, a groovedpulley turning in a block adapted to be drawn up to and held suspendedfrom a carrier or car adapted to run on a track situated above to conveya loaded hook drawn up to the place where the load is to be dropped.(This carrier being in common use and forming no part of my invention isshown in position in Fig. 1, but not referred to by letter.)

ll is a rope having one end at the station 1, Figs. 2 and From thencethe rope extends forward to and across the distant face of thejack-pulley F, thence rearward to and under TCO the grooved pulley O,thence to the carrier and under the grooved pulley G, and has its otherend attached to said carrier, and the lifting or carrying hook isprovided with tripping mechanism whereby, its load may be dropped, and Idesignates a portion of a smaller rope having one end attached to thetripping or releasing mechanism of the hook and the other end at thestarting or loading point, whereby the load on the hook may be droppedtherefrom and the hook drawn back to the loading-point for another load.

Now, the elements of my invention being in the several positions asdescribed, and as illustrated in Figs. 1, 2, and 3, and a horse hitchedto the end of the rope II at the station 1 and pulling in the directionindicated by the arrows, the hook,with its load, will have been drawn upto the carrier by the pulley G, Fig. 1, and held till released. Thehorse continuing the draft in the same direction, the increased tensionon the rope II will cause the lever F to tilt up, and when it assumesthe position indicated by dotted lines, Fig. 2, said rope will slip offthe pulley F" and the carrier on the track convey the loaded hook to thedropping-point, when a pull on the rope I will release the hook, dropits load, and draw the hook and carrier back to the load ingpoint. Itmay here be observed that the horse after having drawn a loaded hook tothe d ropping-place will always be at the starting-place (station 1)ready to draw up a second load, having made no useless walk draggingtheslack rope over the ground.

Having now described my invention, what I do consider new, and desire tosecure by Letters Patent, is

1. A hoisting-jack comprising the followin g instrum entalities: anupright post having its lower end firmly planted into the ground and itsupper end projecting above the surface thereof, a vertical block havinga twopronged jaw at its upper end and its lower end removably secured tothe upper end or said post, a tilting lever having its lower end restingon the ground and its higher end adjustably pivoted between the prongsof said jaw, a grooved pulley vertically disposed and rotatably pivotedto the upper side of said lever, and a hoisting-rope engaging the grooveon the forward side of said pulley, all substantially as described andfor the purpose set forth.

2. In a hoisting-jack, in combination, the post, D, with the tenon, d;the block, E, having the U-shaped socket, and the fulcrumjaw, e, withthe securing-bolts and nuts, and the fulcrum pivot-pin, 6 the tiltinglever, F, having the pivot-orifices, f, with the grooved pulley, F, theaxial pivot-pin, f' and the brace-strap, f all arranged, coinbin'ed andsecured in position, substantially as described and for the purpose setforth.

3. The combination in a hoisting-jack, with ing rearward, substantiallyas described and for the purpose hereinbefore set forth.

In testimony whereof I have hereunto subscribed my namein the presenceof two subscribing witnesses.

HENRY E. IVITMER.

lVitnesses:

JOHN BAKER, JAS. M. BAKER.

